ldh (lactate dehydrogenase)
ChemistryBlood sampleResults 24 hrsNo fasting
LDH (Lactate Dehydrogenase)
LDH (lactate dehydrogenase) is an enzyme found in many tissues that is released when cells are damaged. People get it checked as a general marker of tissue injury or disease activity.
Sample
Blood
Results
24 hrs
Fasting
Not required
Follow-up
Optional add-on
What this test detects
Lactate dehydrogenase
Enzymatic kinetic · serum
Quantitative · U/L
When to get this test
General tissue damage
Raised LDH can point to injury in tissues such as muscle, liver, or blood cells.
Monitoring certain conditions
Used to help follow disease activity in some blood and other disorders.
Part of a wider work-up
Often interpreted alongside other tests to find the source of a problem.
How to prepare
01
No special preparation needed.
Common questions
What does a high LDH mean?
Because LDH is in many tissues, a high level shows cells have been damaged somewhere but is not specific to one organ.
Do I need to fast for this test?
No fasting is required for an LDH test.